Recently, cases of fatal traffic accidents involving inebriated drivers have been often reported in the news. This issue has not only endangered the safety of drivers but also other road users. To overcome this problem, drunk driving detectors have the potential to be explored to reduce the rate of road accidents. In this study, a drunk driving detection device was introduced using a microcontroller embedded into the vehicle starting system. Alcohol sensor was used in this study to detect alcohol levels in human breath. The device will initially detect the level of alcohol in the breath and when the alcohol concentration is detected in excess of 50 milligrams per 100 milliliters of blood, the car’s starting system is stopped so that the car cannot be started. Next, the driver’s window will slide down automatically by 20 mm for the purpose of ventilation in the vehicle cabin. With the use of this system, road accidents caused by drunk drivers can be reduced. In addition, a driver who is intoxicated can rest in the car cabin until he is awake from the state of intoxication without drowning in the car cabin.

Druck Driver, Alcohol Sensor, Breath Alcohol Concentration